Hello Experts!
I am new to IPv6 and in general a consumer of OpenWrt project. I have a BTHH5A running OpenWrt 22.3.02. My ISP is Sky on vdsl supplying me ipv6 with /56 mask. I am using Sky's router sr-203 downstream to enable sky's voip. I created a separate voipif interface for sr-203. An ethernet cable runs between lan4 of BTHH5A and lan/wan port of sr-203. With this setup sr-203 is connected to internet. I can join sr-203's wifi and further browse ipv4 internet over that ( double natted ? ) connection.
The above setup is functionally similar to the one described in this thread : https://forum.openwrt.org/t/ipv6-sub-delegating-a-delegated-prefix/
Coming to ipv6, the BTHH5A's lan (/60) and voipif (/63) both interfaces receive the delegated prefix from wan6 (/56). However, the voip's prefix is not transferred to sr-203 downstream. The global routing address for sr-203 is blank.
Here are the details :
:~# ifstatus wan6
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 10641,
"l3_device": "dsl0.101",
"proto": "dhcpv6",
"device": "dsl0.101",
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
],
"ipv6-address": [
],
"ipv6-prefix": [
{
"address": "2a02:c7e:3847:1f00::",
"mask": 56,
"preferred": 1966,
"valid": 1966,
"class": "wan6",
"assigned": {
"lan": {
"address": "2a02:c7e:3847:1f00::",
"mask": 60
},
"VOIPIF": {
"address": "2a02:c7e:3847:1f10::",
"mask": 63
}
}
}
],
"ipv6-prefix-assignment": [
],
"route": [
{
"target": "::",
"mask": 0,
"nexthop": "fe80::e681:84ff:febe:ab34",
"metric": 512,
"valid": 4482,
"source": "2a02:c7e:3847:1f00::/56"
}
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
]
},
"data": {
}
}
:~# ifstatus VOIPIF
{
"up": true,
"pending": false,
"available": true,
"autostart": true,
"dynamic": false,
"uptime": 9057,
"l3_device": "lan4",
"proto": "static",
"device": "lan4",
"updated": [
"addresses"
],
"metric": 0,
"dns_metric": 0,
"delegation": true,
"ipv4-address": [
{
"address": "192.168.8.1",
"mask": 29
}
],
"ipv6-address": [
],
"ipv6-prefix": [
],
"ipv6-prefix-assignment": [
{
"address": "2a02:c7e:3847:1f10::",
"mask": 63,
"preferred": 1909,
"valid": 1909,
"local-address": {
"address": "2a02:c7e:3847:1f10::1",
"mask": 63
}
},
{
"address": "fdbb:473b:26a6:20::",
"mask": 63,
"local-address": {
"address": "fdbb:473b:26a6:20::1",
"mask": 63
}
}
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
],
"inactive": {
"ipv4-address": [
],
"ipv6-address": [
],
"route": [
],
"dns-server": [
],
"dns-search": [
],
"neighbors": [
]
},
"data": {
}
}
:~# cat /etc/config/network
config interface 'VOIPIF'
option proto 'static'
option ipaddr '192.168.8.1'
option netmask '255.255.255.248'
option device 'lan4'
option ip6assign '63'
config interface 'wan'
option device 'dsl0.101'
option proto 'dhcp'
option norelease '1'
option reqopts '43'
option peerdns '0'
option delegate '0'
option hostname '*'
option clientid '736f6d6574649a0e6740736b7d29736c7c6164af7468696e67' #
config device 'wan_dsl0_dev'
option name 'dsl0'
option macaddr '12:34:56:78:90:ab'
config interface 'wan6'
option proto 'dhcpv6'
option reqprefix 'auto'
option peerdns '0'
option norelease '1'
option reqaddress 'try'
option device '@wan'
:~# cat /etc/config/dhcp
config tag 'SkyBB'
list dhcp_option '43,53:6b:79:42:42:2d:44:48:43:50'
config host
option name 'Sky-Router'
option dns '1'
option mac 'ab:cd:ef:01:ee:6b'
option tag 'SkyBB'
config dhcp 'VOIPIF'
option interface 'VOIPIF'
option leasetime '12h'
option start '2'
option limit '6'
list dhcp_option '43,53:6b:79:42:42:2d:44:48:43:50'
option ra 'server'
option dhcpv6 'server'
config dhcp 'lan'
option interface 'lan'
option start '2'
option limit '253'
option leasetime '12h'
option dhcpv6 'server'
option ra 'server'
option ra_management '1'
The sr-203 router address assignments :
Moreover, the address 2a02:c7e:3847:1f10::1 and 2a02:c7e:3847:1f00::1 are not globally reachable. The error I get is 'no default route'. How do reach them ? How do I delegate the ipv6 prefixes further downstream ? Could you please point out what I am missing ?
Thank you !
-Gamma
Thank you !